ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,389,163, issued on Aug. 12, was assigned to AAC Technologies (Nanjing) Co. Ltd. (Nanjing, China).
"Multifunctional sound device" was invented by Xingzhi Huang (Nanjing, China), Wei Song (Nanjing, China), Jie Ma (Nanjing, China), Lubin Mao (Nanjing, China), Yun Tang (Nanjing, China) and Ziang Li (Nanjing, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A multifunctional sound device includes a housing, a sound unit, and a motor assembly. The sound unit includes a frame, a vibration system, a magnetic circuit system, and a first elastic component. The vibration system includes a vibrating diaphragm and a a voice coil. The voice coil drives the vibrat...